| 摘要 |
PROBLEM TO BE SOLVED: To avoid, using a simple configuration, reading information from RFID media adjacent to RFID media to be read when reading information from RFID media formed on a sheet substrate by marking it out in matrix form.SOLUTION: A radio wave shield member 30 configured in a lattice form by having lateral wall parts 31a-31c extending in the horizontal direction to the polarization plane of a radio wave radiated from a linear polarization antenna 21 and vertical wall parts 32a-32c extending in the vertical direction to the polarization plane of the radio wave radiated from the antenna 21 intersecting each other is interposed between RFID media to be read and the antenna 21, the heights of the lateral wall parts 31a-31c being higher than the heights of the vertical wall parts 32a-32c.SELECTED DRAWING: Figure 2 |
